Effect of the dynamic filtration performance of nanofiber membrane filter media based on different coating methods
In order to solve the problem of rapid resistance growth and easily membrane damage in the using of Polytetrafluoroethylene(PTFE)membrane filter materials,polyester(PET)nanofiber membrane was prepared by electrospinning technology,and the PET nanofiber membrane was compounded with polyphenylene sulfide(PPS)needle felt filter media as the surface membrane by direct coating method,heat treatment coating method and one-step co-electrospinning coating method.The dynamic filtration performance tests were performed on PET nanofiber membrane coated filter media prepared by different membrane coating methods,PPS filter media,and PTFE coated filter media.The PET nanofiber membrane filter media prepared by the three coating methods demonstrated excellent dynamic filtration performance compared to PTFE coated filter media.In the stable filtration stage,the time required for a single cycle of PET/TPU composite filter material prepared by one-step co spinning membrane covering method is twice that of PTFE membrane covering filter material,and its dust removal rate is 99.79％.The PET/TPU nanofiber membrane filter media possessed the good dust removal effect,high dust removal rate,low pressure drop growth rate,and stable time required to complete a single cycle.In long-term using,the low residual pressure drop after spraying could save energy and reduce the broken of membrane caused by airflow spraying.PET/TPU nanofiber membrane composite needle felt filter media has great application potential in the field of industrial dust removal.
万方数据
维普
